EP Heart Doctor in Mesa, AZ

Dr. John F. Beshai is an internationally renowned and respected cardiologist who is known for his research and expertise as well as for making an instant connection with his patients. He is a compassionate doctor whom patients and referring doctors seek with complete confidence. His research is published in major journals including The New England Journal of Medicine, Heart Rhythm, American Heart Journal, Journal of American College of Cardiology, and the American Journal of Cardiology. Dr. Beshai is a teacher of repute who understands the most basic medical student as well as the most advanced training level of cardiac electrophysiology fellow. He is currently serving as a flight surgeon in the United States Air Force and applies the core values of the Air Force to his practice as well – integrity first, service before self, and excellence in all we do.

Our goal at The Heart Rhythm Institute of Arizona is to keep your heart in rhythm, one beat at a time. Our center has remained old-fashioned in the manner that you are our priority from the moment you walk in. We understand how scary it can be to suffer from a heart concern, especially when you are experiencing irregular and rapid heartbeats. Dr. Beshai is an extraordinary arrhythmia doctor who offers solutions for all your heart issues. With more than 15 years of experience serving as staff of prestigious institutions like the University of Chicago and the Mayo Clinic, he offers the most advanced approach with state-of-the-art techniques and current guidelines to help his patients from Mesa. We offer every patient customized care and ensure a complete understanding of your heart condition as well as all the available options so that we can help you make a confident decision.


Dr. Beshai is an expert in the diagnosis of complex abnormalities in heart rhythm and device management. We offer cardiac ultrasound at our center to check the movement and functioning of your heart to determine where the irregular activity stems from. You can also benefit from ECG both with and without exercise stress testing; this checks the electrical activity of your heart. You can get a portable device to check the activity of your heart known as a Holter Monitoring system. In case you have cardiac issues, Dr. Beshai offers his patients an athlete physical examination that determines if you are healthy enough to participate in strenuous activities and sports. Here are the diagnostic choices our patients from Mesa have:


A heart condition can lead to anxiety in patients. We understand this and offer the latest in diagnostic tools to diagnose what you are experiencing and develop an optimal treatment plan for you. We can help with correct diagnosis and management of your condition when you experience irregular heartbeats, heart rhythm issues (arrhythmias), rapid or chaotic heartbeats or fainting. Some conditions that have no cure such as cardiac sarcoidosis can also be managed at The Heart Rhythm Institute of Arizona. We help ensure that this condition does not progress any further. You can also enjoy a healthier life with our expertise and exceptional care. Here are the available choices for our patients from Mesa:


We offer a proper diagnosis for any cardiac concern that may be bothering you in addition to personalized treatment plans. An irregular heartbeat or arrhythmias are regulated with the use of cardiac resynchronization therapy which involves the implantation of a pacemaker or cardioverter-defibrillator. These latest devices ensure that any serious cardiac complications can be prevented in the future. Minimally invasive diagnostic procedures are used at our center to study the electrical activity of your heart which helps determine the reason for your irregular heartbeat. We also offer the WATCHMAN device; it is a permanent heart implant that acts as an alternative to lifelong medication and reduces the risks of a stroke. Here are the procedures our patients from Mesa can benefit from:

About Mesa, AZ

Mesa is a city in the Maricopa County of Arizona. It is a suburb located about 20 miles east of Phoenix. Mesa is the 3rd largest city in the state and the 36th largest city in the US. It is home to numerous higher education facilities including the Polytechnic campus of Arizona State University. There are several cultural attractions like the Mesa Arizona Temple where an Easter Pageant is held each spring, the Mesa Arts Center, and Mesa Amphitheater. Mesa also has more than 2,280 acres of parkland with Red Mountain Park spanning 1,146 acres. The park includes a lake, basketball court, playgrounds, and a cement volleyball court. The city is also home to numerous championship golf courses including the Mesa Country Club. Mesa is a delegation of Special Olympics Arizona and the team includes track & field, kayaking, swimming, basketball, bowling, and golf. There are many historical properties in Mesa too which are either on the National Register of Historic Places or the Mesa Historic Properties like the Sirrine House, the Water Tower at Williams Air Force Base, and the Mesa Grande Temple Mound.

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Dr. Beshai is a board-certified electrophysiologist internationally renowned and respected for his expertise and research. Having published in major medical journals and travelled all over the world to present research, he is dedicated to providing innovative, state-of-the-art care to his patients.